https://www.mouser.com/datasheet/2/54/tv09-777818.pdf
The length "L" is from where the pot sits on the
PCB board, to the end of the shaft, but it looks
like this L maxes out at 30mm, and I need 35mm.
I'm fairly sure the original is a Bourns pot, because
the bottom of it says "B202", which shows the taper
profile, and the resistance value.
What to do? Maybe I could cut off the tip of the
original shaft, and just epoxy it onto the new one?